Displaying 20 results from an estimated 21 matches for "unitary".
2005 Aug 12
3
General expression of a unitary matrix
Hi, all,
Does anybody got the most general expression of a unitary matrix?
I found one in the book, four entries of the matrix are:
(cos\theta) exp(j\alpha); -(sin\theta)exp(j(\alpha-\Omega));
(sin\theta)exp(j(\beta+\Omega)); (cos\theta) exp(j\beta);
where "j" is for complex.
However, since for any two unitary matrices, their product should al...
2009 Jul 29
3
predict
...n but it doesn't work.
I have used predict function like this:
newdata<-seq(from=0.1, to=0.32,by=0.02)
data<-predict(fm,newdata)
where fm is a regression model. The predict function return me that:
Error in eval(predvars, data, env) : numeric argument 'envir' doesn't have
unitary length
where is the error?
--
View this message in context: http://www.nabble.com/predict-tp24719362p24719362.html
Sent from the R help mailing list archive at Nabble.com.
2010 May 10
2
[LLVMdev] Separate loop condition and loop body
...r the list of all Basicblocks of a loop and separate the
header as the condition and the remaining as the body of the loop. However,
this is not correct for instance in the case of a while loop in the form:
while( A & B) do
{ body }
My aim is to manipulate for loops, while and do-while loops unitary, but I
did not find an easy way to do this. I tried also to apply passes like
"Canonicalize natural loops", "Canonicalize Induction Variables" or "Natural
Loop Construction" such that the loops were represented in the same form.
Still I do not find a one-to-one link be...
2008 Oct 08
2
Creating a matrix
Good evening.
I have this following table and I would like to turn it into a matrix in
which my rows would be filled with de "Sellers", my columns with my
"Articles" and my data would be the mean unitary price used by each seller
in each produt.
Seller Art. Unit Price
1 v1 p1 9.148352
2 v2 p1 2.858073
3 v3 p1 3.775315
4 v4 p1 9.821429
5 v3 p1 3.286827
6 v5 p2 11.105769
This is only the head of a table with more than 4...
2011 Nov 21
0
Suggested improvement for src/library/base/man/qraux.Rd
...\code{min(ncol(X), nrow(X))} columns of the original \eqn{\bold{X}}
from which the qr object was constructed. The default when
\code{complete} is \code{TRUE} is a square matrix with the original
\eqn{\bold{X}} in the first \code{ncol(X)} columns and an arbitrary
orthogonal completion (unitary completion in the complex case) in
the remaining columns.}
\item{Dvec}{vector (not matrix) of diagonal values. Each column of
the returned \eqn{\bold{Q}} will be multiplied by the corresponding
diagonal value. Defaults to all \code{1}s.}
}
\description{
Returns the original matrix from...
2010 May 10
0
[LLVMdev] Separate loop condition and loop body
...ist of BasicBlocks building the condition
> of a
> loop and the list of BasicBlocks that form the body?
Based on my (limited) experience with Loop and LoopInfo, this isn't
possible. (But don't take my word for it.)
> My aim is to manipulate for loops, while and do-while loops unitary,
> but I
> did not find an easy way to do this.
I think the problem here is that LLVM's CFG is low-level enough such
that the distinction between the loop header expression and the loop
body is lost.
Why exactly do you need to identify the blocks that form the loop
header expres...
2010 Sep 10
1
adding labels above bars in a barplot
Hello,
I want to make a general routine to draw barplots with numbers plotted
above each bar. See the example below.
I could not place the numbers on the middle of each bar because I
could not calculate the right position of each x-axis tick. axTicks(1)
indicated a unitary step, but it does not seem work.
I appreciate any help or suggestions.
Best regards,
Antonio Olinto
======================
CAT VAR1 VAR2
Category 01 17.5 9
Category 02 15.2 20
Category 03 10.3 500
Category 04 8.4 150
Category 05 20.3 5000
# Coping data from a spreadsheet
dat.data <- read....
2000 Dec 10
1
more boxplot questions
...ng the the variance (rectangle height = 2s, whiskers
going from +1s to +2s and -1s to -2s). Is there a way to produce such
boxplot with R ?
Second question: I would like to ponderate the plotted variable with
another variable. To take an example, the grouping factor A is a
production city, X is a unitary price and Y is a quantity bought from
city Ai at price Xi. I would like to make a boxplot of the prices
ponderated by the quantity bought. Since it sounds like a fairly
standard visualization, I suppose ther's an easy way to do this with R.
Thank you for your help.
Alexandre Fayolle
-.-.-.-...
2009 Oct 20
2
Interpretation of VarCorr results
...r
(Intercept) 5.274544e-01 (Intr)
N 7.912717e-05 -0.58
Residual 1.508647e-01
My questions are:
. Is the model correctly specified?
. If yes, how should I read the standard deviation estimate for N
(7.912717e-05)? Is this the standard deviation for a unitary variation of
N? Or is it the standard deviation due to the "global" contribution of the N
independent variable? (note that I have a strong feeling that N contributes
a lot to the final variance; so, the value that I obtain here seems "too
small" for my beliefs)
. Is the...
2012 Mar 27
0
[LLVMdev] [cfe-dev] Announcing 3.1 Release Branch Date!
...here was a lot of interest in the 3.0 release for an ARM release. We will try to do one this release on a trial basis. We are looking for ARMv7 cortex-a8 and cortex-a9 on Linux.
If you are interested, I can upload the current trunk version into the
Debian archive in the experimental suites with the unitary tests
activated.
I already uploaded the current trunk of llvm in experimental [1]. It is
in the NEW queue but I am planning to upload the trunk of clang as soon
as it get accepted. I was not planning to enable the test suite (the 12
Debian archs is a huge work) but if you want to get feedback, I ca...
2005 Jun 03
1
Problems of performance between linux and freebsd
...console linux turns out to be roughly 20-25%
fast
er than freebsd. Particulary slow results the loop phase of the R source
code that while running slows down and seems to clog in the end. The slowing
down is also perceptible under linux but not at the same level.
Admiring the "ordered and unitary layout" of freebsd, the logical way of
setting it up, the richness of applications, I would like to line the
freebsd installation up to the linux one, improving its performance at most,
not necessarily making it faster than linux.
How could I obtain those improvements? What could I do to...
2012 Oct 22
4
How do design next-gen modules, any guidelines ? a question for gurus...
Hi,
My dilemma is how should I write my module to be "next-gen" ?
Not from a code point of view but from a design/layout point of view.
We wrote our modules for 2.6.x like every beginner would have done:
write everything in init.pp.
But now, the fashion is to use parameterized classes and Hiera which we
will use with puppet 2.7.x.
I mainly followed/watched what Example42 was doing.
2012 Mar 27
5
[LLVMdev] Announcing 3.1 Release Branch Date!
IMPORTANT! IMPORTANT! IMPORTANT!
We will be branching for the 3.1 release on April 16th! :-) This gives us a little over two weeks to get the trees into the most stable condition we can.
What this means for you:
All major features for the 3.1 release should be finished or near completion by the April 16th. After April 16th, we will accept only bug fixes and patches which do not change the
2001 Jan 07
0
boxplot question
...rror in the R documentation about the bxp() structure
...
$stats should be a matrix not a vector ... but I may have that wrong.
>Second question: I would like to ponderate the plotted variable with
>another variable. To take an example, the grouping factor A is a
>production city, X is a unitary price and Y is a quantity bought from
>city Ai at price Xi. I would like to make a boxplot of the prices
>ponderated by the quantity bought. Since it sounds like a fairly
>standard visualization, I suppose ther's an easy way to do this with R.
This looks like a problem for coplot() if...
2011 Oct 02
2
Mou - Markdown editor for web developers
Hi all,
I made a new markdown editor for Mac, named Mou
- http://mouapp.com
It's still in early beta stage. Requires OS X 10.7+ to run.
Let me know how do you think about it. :)
Kudos to John Gruber who invented Markdown language, as always!
:)
Best regards,
Chen Luo
2010 May 10
2
[LLVMdev] Separate loop condition and loop body
...s building the condition
>> of a loop and the list of BasicBlocks that form the body?
>
> Based on my (limited) experience with Loop and LoopInfo, this isn't
> possible. (But don't take my word for it.)
>
>> My aim is to manipulate for loops, while and do-while loops unitary,
>> but I did not find an easy way to do this.
>
> I think the problem here is that LLVM's CFG is low-level enough such
> that the distinction between the loop header expression and the loop
> body is lost.
>
> Why exactly do you need to identify the blocks that form the...
2008 Aug 12
1
Problem with using read.csv with web address
...the
source should be acknowledged.
V2 V3 V4
V5 V6 V7 V8
1
2 Stoke
Plymouth South West England
3 Ward Unitary
Authority Region Country
4 Count Households Apr01 5784
106583 2185966 21262825
5 Count Households Apr01 5472
102540 2085984 20451427
6 Count Households Apr01
312 4043...
2005 May 02
14
eigenvalues of a circulant matrix
Hi,
It is my understanding that the eigenvectors of a circulant matrix are given as
follows:
1,omega,omega^2,....,omega^{p-1}
where the matrix has dimension given by p x p and omega is one of p complex
roots of unity. (See Bellman for an excellent discussion on this).
The matrix created by the attached row and obtained using the following
commands
indicates no imaginary parts for the
2012 Mar 15
6
Generation of correlated variables
Hi everyone.
Based on a dependent variable (y), I'm trying to generate some independent
variables with a specified correlation. For this there's no problems.
However, I would like that have all my "regressors" to be orthogonal (i.e.
no correlation among them.
For example,
y = x1 + x2 + x3 where the correlation between y x1 = 0.7, x2 = 0.4 and x3 =
0.8. However, x1, x2 and x3
2010 Aug 24
4
how to plot y-axis on the right of x-axis
Dear List,
I have a richness data distributing across 20 N to 20 S latitude. (120 E-140
E longitude).
I would like to draw the richness in the north hemisphere and a regression
line in the plot
(x-axis: latitude, y-axis: richness in the north hemisphere).
The above demand is done using plot.
Then, south hemisphere richness and regression are required to be generated
using
the same y-axis above